Nut-lock.



'simplicity of the device, as '.well asthe ad- .f'vantages thereof will, it is thought,'b`e lperfectly apparent to those skilled in the art to which such invention appertains without 5' further detailed description;4 f

` Having thusk described the" Iclaiinis: In combination, a bolt, a nut threaded thereon, said nut having an opening ar# ranged adjacent the periphery of the lbore thereo, a locking keyincluding a cylindricalxrigid `body portion and a reduced hond able tongue semi-circular in cross section, thev body at its juncture with the tongue being 15' slotted inwardly on van angle so as to form.

invention, what a wedgefshaped tooth`,\the key adapted to be *inserted through the opening vso that the 'toothiean be forced into one of the threads of said bolt, the free end of the body vportion projecting beyond onev faceof the nut, the free emi of the tongue portion being bent over one edge of the wall of the opening so as to lie parallel with two faces .o the nut.

In testimony whereof I affix my signature in presence of two Witnessea j p l ROBERT'R. POWERS. 'Y

Witnesses:

. T.-C. Gramm,

E. A. Granma.

' Espas'otthii patent maybe obtained-tor ve cents each, the Mommlnionerof Patent!! Wanhingtomn 

